Method constructor

packages/firebase-messaging/index.android.ts:31–37

()

	showNotificationsWhenInForeground: boolean;
	_instance: MessagingCore;
	constructor() {
		if (defaultMessaging) {
			return defaultMessaging;
		}
		defaultMessaging = this;
		this._instance = MessagingCore.getInstance();
	}

	getToken(): Promise<string> {
		return new Promise((resolve, reject) => {